PT-2026-64475 · Yoast · Yoast Seo – Advanced Seo With Real-Time Guidance/Built-In Ai

Dmitry Ignatyev · CVE-2026-15425 · Published 2026-07-25 · Updated 2026-07-25

NVD

CVSS v3.1

6.4

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

The Yoast SEO – Advanced SEO with real-time guidance and built-in AI plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Post Slug (post name) in all versions up to, and including, 28.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This requires pretty permalinks to be enabled, as the exploit chain depends on get permalink() embedding the stored percent-encoded post name in the generated URL.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-15425

Affected Products

Yoast Seo – Advanced Seo With Real-Time Guidance/Built-In Ai

References · 8

• https://nvd.nist.gov/vuln/detail/CVE-2026-15425 · Security Note
• https://plugins.trac.wordpress.org/browser/wordpress-seo/tags/27.6/admin/class-bulk-editor-list-table.php#L900 · Note
• https://plugins.trac.wordpress.org/browser/wordpress-seo/tags/28.0/admin/class-bulk-editor-list-table.php#L898 · Note
• https://plugins.trac.wordpress.org/browser/wordpress-seo/tags/27.6/admin/class-bulk-editor-list-table.php#L898 · Note
• https://plugins.trac.wordpress.org/changeset/3598937/wordpress-seo/trunk/admin/class-bulk-editor-list-table.php · Note
• https://wordfence.com/threat-intel/vulnerabilities/id/4b2fa1b7-a5af-4ea6-9bee-19a6cdfd7701?source=cve · Note
• https://plugins.trac.wordpress.org/browser/wordpress-seo/tags/28.0/admin/class-bulk-editor-list-table.php#L900 · Note
• https://plugins.trac.wordpress.org/changeset?old_path=%2Fwordpress-seo/tags/28.0&new_path=%2Fwordpress-seo/tags/28.1 · Note